The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 02, 1988
Filed:
Mar. 12, 1986
Applicant:
Inventor:
Bruce C Christensen, Marinette, WI (US);
Assignee:
Wormald U.S., Inc., Dallas, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05D / ;
U.S. Cl.
CPC ...
13710111 ; 137114 ; 137895 ; 169 15 ;
Abstract
A pressure equalizing valve comprises a valve body with a longitudinally disposed bore therein, and a spool disposed in the bore for longitudinal movement to regulate fluid communication from an inlet port to outlet ports in response to a pressure differential between first and second sense ports disposed on first and second end faces of the valve body.